MICRONAS CEA3207A

PRODUCT INFORMATION
CEA 3207A
May/2005
CEA 3207A
ARM7-Based Car Entertainment Controller
The CEA 3207A is a device of Micronas’
32-bit Car Entertainment Controller family
based on an ARM7TDMI CPU core.
Like the already available CDC 3207G, the
CEA 3207A is part of the LEAP family concept (Low Emission Automotive Processor).
The microcontroller with its ARM7TDMI
RISC CPU core allows two states of operation: ARM state with 32-bit instructions and
THUMB state with 16-bit instructions.
It is suited for entertainment-related applications like car radio or navigation systems.
The current version CEA 3207A offers
32 kBytes of SRAM, 512 kBytes of Flash,
and 8 kBytes of boot ROM. Communication
is possible via two FullCAN modules, two
I2C modules and two UART or SPI modules
each. Due to its scalable architecture, further derivatives can be obtained within short
lead time. An upgrade version with 1 MByte
Flash and up to 64 kBytes RAM, as well as
a downgrade version with 256 kBytes Flash
and 16 kBytes RAM in the same package is
planned. All devices have the patented
built-in ERM (EMI Reduction Module) and
are operated on a single 5-V power supply.
Features
◆ Two UARTs, two SPIs
◆ 512 kBytes Flash ROM
◆ 32 kBytes SRAM
◆ Two CAN modules with 512 Bytes each
of object RAM according to Bosch specification V2.0B (32 message objects)
◆ 8 kBytes boot ROM
◆ Two I2C master modules
◆ Four CPU operation modes
(Deep Slow, Slow, Fast, PLL)
◆ Six PWM modules (configurable as
2 ×8 bit or 1×16 bit)
◆ PLL circuitry delivering up to 50 MHz
◆ Pulse frequency modulator
◆ 4- to 5-MHz oscillator
◆ Sound generator with auto decay
◆ EMI reduction module (ERM)
◆ Two SW-selectable clock outputs
◆ Digital watchdog
◆ 16-bit free-running counter with six capture/compare modules
◆ Central clock divider
◆ Interrupt controller with 40 inputs and
16 priority levels
◆ 1 ×16 bit timer and 4x8 bit timer
◆ JTAG interface
◆ Six port interrupts
◆ −40 to +105 °C case temperature range
◆ Regulator input supervision for reset/
alarm
◆ Single 3.5 V to 5.5 V supply voltage
(limited I/O performance below 4.5 V)
◆ Clock and supply supervision
◆ Up to 102 GPIOs
◆ 16-channel 10-bit ADC
◆ 128-pin PQFP package with 0.5 mm pin
pitch
◆ Two comparators
◆ ADC reference (1 internal, 3 external)
◆ 48 × 4 LCD module (optional)
◆ Three DMA channels
PRODUCT INFORMATION
CEA 3207A
May/2005
Application
The CEA 3207A targets infotainment applications with a need for high performance. It
serves as controller, as well as interface to
signal processing units.
Tuner
DSP
I2S
I2C
DAC
3550A
Due to its scalable architecture, the
CEA 3207A can be upgraded with more
memory, CAN controller, DSP, and graphical functions. The application can also be
upgraded towards multistandard decoding
capabilities (MP3, AAC, WMA) using Micronas’ MAS 35xx family devices.
34
71
2 4 36 , 5 6
47
/
CEA
32xxA
ARM7
K7
A 1
2
CD-ROM
Subwoofer
Display
6261-102-1x
Fig. 1: Example application: CD-ROM-based car radio
System Architecture
The
Car
Entertainment
Controller
CEA 3207A contains an embedded ARM7TDMI processor which operates at a maximum clock frequency of 50 MHz.
VREFINT
VREF
AVDD
AVSS
BVDD
32
PPorts
Test
Watchdog Clock
40-Input
Interrupt Controller
PLL/ERM
JTAG Interface
Test / Debug
32 kB SRAM
2.5-V Reg.
HPorts
The built-in ERM delivers superb EMI
results reducing the peak values by up to
10 dBµV.
16
Reset
VDD
VSS
2.5-V Reg.
ARM7TDMI
CPU
Wait Comp
The system is scalable in terms of Flash
memory, RAM, CAN, and the number of
peripherals and can be expanded up to
1 MByte of Flash memory.
3.3-V Reg.
DMA Contr.
P0.6 Comp
Bus Controller
512 kB Flash
8 kB Boot ROM
Bandgap Ref.
Bridge
10-Bit ADC
UARTS
2 × UART
UARTS
LCD
Control
(optional)
UARTS
16Bit CCC 0
UART
S
1
× 16-Bit Timer
UARTS
2 × SPI
UARTS
Audio
Module
UARTS
CAPCOM
0,1,2,3
UA
4 × 8-Bit Timer
UARTS
2 × CAN
UARTS
Clock
Out 0,1
UARTS
16Bit CCC 1
6UART
× 8/16-Bit S
PWM
UARTS
2
× I²C Bus
ERM
UARTS
(EMI Reduction Module)
UPorts
FVDD
FVSS
Bridge
Internally, this device works with different
supply voltages: 2.5 V for the core and
3.3 V for the Flash memory.
UVDD
UVSS
52
UARTS
CAPCOM 4, 5
Fig. 2: Block diagram of the CEA 3207A
All information and data contained in this product information are without any commitment, are not to be considered as an offer for conclusion of a contract, nor shall they be construed as to create any liability. Product or
development sample availability and delivery are exclusively subject to our respective order confirmation form. By
this publication, Micronas GmbH does not assume responsibility for patent infringements or other rights of third
parties which may result from its use.
No part of this publication may be reproduced, photocopied, stored on a retrieval system, or transmitted
without the express written consent of Micronas GmbH.
Edition May 18, 2005; Order No. 6251-600-2PI
Micronas GmbH ⋅ Hans-Bunte-Strasse 19 ⋅ D-79108 Freiburg (Germany) ⋅ P.O. Box 840 ⋅ D-79008 Freiburg (Germany)
Tel. +49-761-517-0 ⋅ Fax +49-761-517-2174 ⋅ E-mail: [email protected] ⋅ www.micronas.com